Qatar Petroleum International (QPI; Doha), Shell China, and PetroChina say they have signed a letter of intent (LOI) to "commence joint preliminary studies to assess the viability of building a refinery and petrochemicals manufacturing complex" in China and of marketing the complex's products in the domestic market. PetroChina will have a 51% stake, and QPI and Shell will each hold 24.5% in the joint venture. The companies have not revealed the likely location or the expected investment costs. The LOI was signed by Abdulla Bin Hamad Al Attiyah, Qatar's...